
mineral
Quartz Mineral
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 7 on Mohs scale; Color: Colorless to white/translucent; Luster: Vitreous; Crystal Structure: Hexagonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65
- Hardness
- 7 on Mohs scale
- Color
- Colorless to white/translucent
- Luster
- Vitreous
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Physical properties
Hardness: 7 on Mohs scale; Color: Colorless to white/translucent; Luster: Vitreous; Crystal Structure: Hexagonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65
Formation & geological history
Formed through the crystallization of magma or precipitation from hydrothermal veins. It is found in igneous, metamorphic, and sedimentary environments across all geological ages.
Uses & applications
Used in glassmaking, abrasives, electronic oscillators (piezoelectric properties), jewelry (gemstones), and as a structural component in concrete.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust. It is piezoelectric, meaning it generates an electric charge when mechanical stress is applied.
Field identification & locations
Identify in the field by its hardness (will scratch glass), lack of cleavage, and translucent appearance. It is found globally in riverbeds, mountains, and desert sands.
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Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Granite
Granite (Phaneritic intrusive igneous rock)
igneous
Septarian Pebble
Septarian nodule / Concretion
sedimentary